There’s still a lot we don’t know about the Nintendo NX, such as what it’ll look like and what kind of experience Nintendo plans on delivering to gamers once it’s released. One rumor for the Nintendo NX that continues to pop up is its possible use of physical media, but today, those rumor flames have been fanned once again.

NeoGAF member Atheerios found some interesting documents while browsing the US trademark system. Trademarks for Wii U and 3DS games make mention of game discs and cartridges, respectively, but when browsing The Legend of Zelda: Breath of the Wild’s listing, something interesting popped up. Both “video game discs” and “video game cartridges” show up in the Good and Services section of the filing.

We know Nintendo will release both a Wii U and NX version of the game at the same time. While we know the Wii U is a disc-based console, this leads us to believe there may be some legitimacy to previous rumors of the NX using physical media, such as a game cartridge.

Considering trademark listings for the Wii U and 3DS make mention of their media type, seeing Breath of the Wild’s trademark list both a game disc and game cartridge shouldn’t be considered a mistake on Nintendo’s part.

As of now, Nintendo has yet to disclose much regarding the Nintendo NX. Hopefully we’ll hear more about the upcoming console in the near future, and if it’ll return to the use of game cartridges.

[Img via Ink Whiskey]